<template>
  <div>
    <!-- Header 区域 -->
    <van-nav-bar
      fixed
      title="文章详情"
      left-arrow
      @click-left="$router.back()"
    />

    <!-- 文章信息区域 -->
    <div class="article-container">
      <!-- 文章标题 -->
      <h1 class="art-title">{{articleDetailObj.title}}</h1>

      <!-- 用户信息 -->
      <van-cell center :title="articleDetailObj.aut_name" :label="formatDate(articleDetailObj.pubdate)">
        <template #icon>
          <img :src="articleDetailObj.aut_photo" alt="" class="avatar" />
        </template>
        <template #default>
          <div>
            <van-button
            type="info"
            size="mini"
            v-if="articleDetailObj.is_followed"
            @click="followedFn(false)"
            >已关注</van-button>
            <van-button
            icon="plus"
            type="info"
            size="mini"
            plain
            v-else
            @click="followedFn(true)"
            >关注</van-button
            >
          </div>
        </template>
      </van-cell>

      <!-- 分割线 -->
      <van-divider></van-divider>

      <!-- 文章内容 -->
      <div class="art-content" v-html="articleDetailObj.content"></div>

      <!-- 分割线 -->
      <van-divider>End</van-divider>

      <!-- 点赞 -->
      <div class="like-box">
        <van-button
        icon="good-job"
        type="danger"
        size="small"
        v-if="articleDetailObj.attitude === 1"
         @click="goodFn(false)"
        >已点赞</van-button
        >
        <van-button
        icon="good-job-o"
        type="danger"
        plain
        size="small"
        v-else
         @click="goodFn(true)"
        >点赞</van-button
        >
      </div>
    </div>

    <!-- 文章评论区域 -->
    <comment-list :artId='$route.query.aId'></comment-list>
  </div>
</template>

<script>
import dayjs from 'dayjs'
import relativeTime from 'dayjs/plugin/relativeTime' // 到指定时间需要的插件
import 'dayjs/locale/zh' // 集成中文
import { getArticleDetailAPI, followedUserAPI, unFollowedUserAPI, likeArticleAPI, unLikeArticleAPI } from '@/api'
import CommentList from './CommentList.vue'
dayjs.extend(relativeTime)
dayjs.locale('zh')
export default {
  components: { CommentList },
  data () {
    return {
      articleDetailObj: {} // 文章详情对象
    }
  },
  async created () {
    const res = await getArticleDetailAPI(this.$route.query.aId)
    // console.log(res)
    this.articleDetailObj = res.data.data
  },
  methods: {
    // 点赞 - 取消点赞
    async goodFn (bool) {
      if (bool === false) {
        // 取消点赞
        this.articleDetailObj.attitude = -1
        await unLikeArticleAPI(this.articleDetailObj.art_id)
      } else {
        // 点赞
        this.articleDetailObj.attitude = 1
        await likeArticleAPI(this.articleDetailObj.art_id)
      }
    },
    // 关注作者 - 取关作者
    async followedFn (bool) {
      if (bool === false) {
        // 用户点了已关注按钮身上 取消关注用户 显示关注按钮
        this.articleDetailObj.is_followed = false
        await unFollowedUserAPI(this.articleDetailObj.aut_id)
      } else {
        this.articleDetailObj.is_followed = true
        await followedUserAPI(this.articleDetailObj.aut_id)
      }
    },
    // 格式化时间 -- 多久之前
    formatDate (dateStr) {
      var a = dayjs()
      var b = dayjs(dateStr)
      const c = a.to(b)
      return c
    }
  }
}
</script>

<style scoped lang="less">
.article-container {
  padding: 10px;
  margin-top: 46px;
}
.art-title {
  font-size: 16px;
  font-weight: bold;
  margin: 10px 0;
}

.art-content {
  font-size: 12px;
  line-height: 24px;
  width: 100%;
  overflow-x: scroll;
  word-break: break-all;
  /deep/ img {
    width: 100%;
  }
  /deep/ pre {
    white-space: pre-wrap;
    word-wrap: break-word;
  }
}

.van-cell {
  padding: 5px 0;
  &::after {
    display: none;
  }
}

.avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: #f8f8f8;
  margin-right: 5px;
  border: none;
}

.like-box {
  display: flex;
  justify-content: center;
}
</style>
